You might try a different approach. Say your process is inside a loop:

THISFORM.cmdCancel.Visible = .T.

DO WHILE NOT lCompleted AND NOT THISFORM.lInterrupted
   * Some process here
   DOEVENTS && Tell VFP to check for pending events (mouse click, keyboard entry, etc.)
ENDDO

THISFORM.cmdCancel.Visible = .F.

cmdCancel.Click():
THISFORM.lInterrupted = .T.

HTH

>I have a long process running in My program. I want to give the user the flexibility to stop and get out of this process when he desires. I have tried using On escape command in the code for the process.In the message box if I try to continue the same process by giving RETRY it says " Invalid Push/ Pop"